bates



E- V. BATES.

WOOL CARD.

APPLICATION FILED JAN. 10; I920.

Patented Oct. 31, 1922 2 SHEETS-SHEET I.

IVENTOR.

A TTORNE Y.

E. V. BATES.

WOOL CARD.

APPLICATION FILED JAN.10, 1920:

m2 m: m 6 t m Patented Get. 31, 1922.

UNITED STATES PATENT OFFICE.

EDDO V. BATES, OF LOWELL, MASSACHUSETTS, ASSIGNOR T0 E. V. BATES MACHINE ('10., OF LOWELL, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

WOOL CARD.

Application filed January 10. 1920. Serial No. 350,512.

To all 10710022.)??? may concern:

Be it known that I, Elmo V. Barns, a citizen of the United States, residing at Lowell. in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improven'ients in \Vool Cards, of which the following is a specification.

This invent-ion relates to carding machines, especially those usedv for carding wool.

The usual type of such cards includes, among other parts, a fast running main cylinder, which runs forward and has teeth which pitch forward, and one or more sets of workers, with teeth which pitch forward and which may travel forward or backward at slower speeds than the main cylinder. Be hind each worker is usually a stripper for returning the stock from the worker to the main cylinder. Vith such an arrangement, for every two workers there are two carding oints.

lVith what are known as re-working cards, a set comprises two workers, the first of which travels forward and the second of which travels backward, with a stripper behind the first worker to return the stock to the main cylinder, and a transfer roll between the first and second workers for trans ferring some or all of the stock back from the second to the first worker for the purpose of ire-working it.

The transfer roll has been located above and below the workers. as shown in patents to Henderson. May 10, 1904, No. 759,439, Robinson & Bates, August 22, 190.3, No. 797,749, Robinson & Bates, October 8, 1907, No. 867,837, and Bates & Robinson, Decenr ber 15, 1908, No. 906,993.

Except in Bates & Robinson, No. 906,993, there are only two carding points in any of these devices, and in Robinson & Bates, which shows a somewhat different type of card, in which the two workers are brought together in carding contact, so that there are three carding points. The last named type of card works fairly well on certain classes of long stock, but on other classes of stock and on short stock the resulting fleece or sliver is wavy.

The object of this invention is to provide in each set, including two workers, a stripper and transfer roll, a better transfer roll, and more carding points. Other purposes are to prevent the stock from becoming wavy, and to permit the card to be used on all classes of stock, ii'lcluding stock with a short staple.

My re-working card can be used equallv well as a finisher, a first, or a second breakei It so controls the stock that it does not lie loose on the teeth. of the forward running workers but is well pulled into such teeth. It is therefore not whipped off and does not form objectionable rolls nor a wavy fleece.

Stock from -a finished card of my design is not wavy. I

In the drawings, Fig. 1 a diagrammatic side elevation of a card embodying my in vention. omitting the frame and driving appliances.

2 is a side elevation showing a set of workers with part of a main cylinder on a larger scale than Fig. 1, and showing graphically what I believe to be the course of the stock.

Fig. 3 is a greatly enlarged side elevation showing the adjoining parts of the two workers and transfer roll, with the teeth of such size as to illustrate what I believe to he the action on the stock.

Fig. 4 is aside elevation enlarged, and Fig. 5 is a front elevation, of one variety of card clothing which can be used. I I

Fig. 6 is a front elevation of another variety of card clothing, and Fig. 7 is a side elevation of another variety of ca-rd clothing which can be used.

Fig. 8 is a diagrammatic side elevation of a modified arrangement of parts.

'llhroughout the specification I will call a roll, the top of which travels from left to right. as forward running, and one which travels the reverse way as backward running, and I will consider teeth which pitch from left to right as pitching forward. and those which pitch from right to'left as ')itching backward, with reference to a radial line drawn from the center to the top of the roll.

In the drawings, B represents a main cylinder with teeth which pitch forward and which runs forward at a fast speed, say 1000 per minute. C is a fancy, and H a dolfer of the usual type.

In each set, G- is the first worker, with bent teeth which pitch forward and which runs forward at perhaps 36 feet a minute,

such worker being in carding proximity or contact with the main. cylinder B at the point 20.

H is a stripper for the first worker which has teeth which pitch backward and which runs backward at a speed of perhaps 300 feet per i'ninute, such stripper being so located that it will strip the stock from the first worker at the point 25, and return it to the main cylinder at the point 26.

l is the second worker haying teeth which pitch forward and which runs backward at a slower rate than G, perhaps 16 feet per minute. This worker is in carding proximity or contact with the main cylinder 13 at the point 21., and is also in carding pronimity or contact with first worker G at the point As the first worker (it travels sul'istantially faster than the second worker I, carding takes place at the point Oar-ding also takes place at the points 20 and 21 as in the ordinary card K is a transfer roll with double toothed card clothing. that is, card clothing in which the points oi? the teeth slant at different angles. Pretr-zrably, bent teeth are interspersed with straight teeth which pitch in a diiierent direction, and preferably the bent teeth pitch backward while the straight teeth pitch forward.

This double toothed card clothing transfer roll K preferably travels at about the same surface speed with second worker I, that is, about 16 feet to the minute, and it is obvious that its bent teeth M will cause it to act as a stripper at the point 24;, removing the web entirely from the points of the teeth or worker I between 21% and leaving them clear to card the better with worker G at the point This web at 4-3 will be continuous.

lie't'erring to Fig. 3, this web is carried up over and back until it comes in contact with the teeth on first worker G, when, at about the position 30, bent teeth lvl slant down, and as (1* travels faster than K, the stock is'pnlled away "from the bent teeth M but is held by and combed through the straight teeth 0 which have been inactive until about this point.

From the point to the point 31, however, the straight teeth 0 hold the stock to such an extent that it is pulled well into the teeth oi. G. being well carded as this occurs.

The stock in the teeth. of the first worker (i at 2:2 is therefore well pulled in, but there is enough on the points of the teeth to make a substantial. although thin web 40 betweei'i 22 and 21, and this web is re-carded at the point 21.

'llhe stock 41 between the point 22 and the point 20 is so well pulled into the teeth of worker G that it does not fly off and roll up in the triangular space between the two vorkers and the main cylinder, but is well carded again at the point 20. i W hat is not taken up by the main cylinder at this point goes back at 42 and is stripped by worker H and replaced on the main cylinder.

egarding Fig. 1 as a diagram, it is obvious that the roll K may be coverel with any kind of card clothing, the points and the teeth oil? which slant at different angles, such card clothing, for instance, as shown in patent to Bates & Robinson, card clothing, No. 922,-H8, Way 25, 1909.

The teeth M and 0 may be arranged as in Fig. i so that they overlap, or as in Fig. 7, one behind the other, or they may be arranged as shown in Fig. 5, a straight tooth besides a bent tooth. They may also be arranged in parallel rows such as shown in Fig. (3. at M, M and M, O, O and 0, etc,

Preferably, as shown in. Fig. 4, the points of the bent teeth M are sharp, and the points of the straight teeth 0 are dull, and preferably also the points of the bent teeth are in the same radial line A. A as the base, so that when pulled back, they pull away from the adjoining roll rather than lift up so as to project into the teeth thereof.

In Fig. 8. the workers G and I are shown as separated. ll it'h such arrangement, there is no. carding at 22 and no web 4C0 but otherwise the operation "is the same.

The axis of the transfer roll K may be raised or lowered. and its size may be varied. Its axis is preferably above the axes of the workers. but in any case, its location, its size and the pitch oi its teeth should be such that the stock will be entirely removed "from it by the first worker G.

The straight teeth should have such a pitch that they will. hold the web enough at the point of contact between roll K and worker (i to prevent it from separating and forming wavy stock. Preferably the speed of the first worker should be such that its teeth will comb the stock by pulling its iibres through the straight teeth before, at. and more or less beyond the point of contact.

I claim:

1. ln carding machine, the combination of a fast running main cylinder which runs forward and has teeth. which pitch forward with a set of rolls cooperating therewith, such set including a slower running first worker in carding contact with the main cylinder which. runs forward and has teeth which pitch forward, a stripper back of the first worker which runs backward at a slower surface. speed than the main cylinder and a taster surface speed than the first worker and strips the stock therefrom and returns it to the main cylinder. a second worker which runs backward at a slower Surface speed than the first worker and has teeth which pitch forward, such worker being in carding contact with the main cylinder and with the first worker, and a transfer roll above and between said workers which runs backward at substantially the same surface speed as the second worker and has straight teeth which pitch forward and bent teeth which pitch backward.

In a carding machine, the combination of a main cylinder which runs forward and has teeth which pitch forward with aset of rolls co-o 'ierating therewith, such set including a first worker in carding, contact with the main cylinder which runs forward and has teeth which pitch forward, a stripper which strips the stock therefrom and returns it to the main cylinder, a second worker which runs backward and has teeth which pitch forward. such worker being in carding; contact with the main cylinder and with the first worker. and a transfer roll. above and between Said workers which runs backward and has straight teeth which pitch forward and bent teeth which pitch backward.

3. In a carding machine, the combination of a main cylinder with a set of rolls co-opcrating therewith, such set including a first worker and a second worker which are in carding proximity with each other, and each of which is in carding proximity with the main cylinder, a transfer roll covered with card clothing in which bent teeth are interspersed with straight teeth which pitch in a different direction, located above, between, and in operative relation with the first and second workers, and a stripper for taking stock from the first worker and replacing it upon the main cylinder.

In testimony whereof I have aflixed my signature.

EDDO V. BATES. 

